yuzu/mbedtls
1
0
Fork 0
mirror of https://github.com/yuzu-emu/mbedtls.git synced 2025-07-07 02:20:34 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix potential stack overflow

Browse source
This commit is contained in:
Manuel Pégourié-Gonnard 2014-11-12 16:52:34 +01:00
parent fdec957e55
commit 360eb91d02
2 changed files with 28 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
ChangeLog
View file

@ -9,6 +9,9 @@ Security
* Fix remotely-triggerable memory leak caused by crafted X.509 certificates
(TLS server is not affected if it doesn't ask for a client certificate)
(found using Codenomicon Defensics).
* Fix potential stack overflow while parsing crafted X.509 certificates
(TLS server is not affected if it doesn't ask for a client certificate)
found using Codenomicon Defensics).
Changes
* Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.

11
library/x509parse.c
View file

@ -296,6 +296,9 @@ static int x509_get_name( unsigned char **p,
size_t set_len;
const unsigned char *end_set;
/* don't use recursion, we'd risk stack overflow if not optimized */
while( 1 )
{
/*
* parse first SET, restricted to 1 element
*/
@ -312,20 +315,20 @@ static int x509_get_name( unsigned char **p,
return( POLARSSL_ERR_X509_FEATURE_UNAVAILABLE );
/*
* recurse until end of SEQUENCE is reached
* continue until end of SEQUENCE is reached
*/
if( *p == end )
return( 0 );
cur->next = (x509_name *) malloc(
sizeof( x509_name ) );
cur->next = (x509_name *) malloc( sizeof( x509_name ) );
if( cur->next == NULL )
return( POLARSSL_ERR_X509_MALLOC_FAILED );
memset( cur->next, 0, sizeof( x509_name ) );
return( x509_get_name( p, end, cur->next ) );
cur = cur->next;
}
}
/*